Top 10 players Manchester United regret selling

#2 Johnny Giles

Johnny Giles was sold by Sir Matt Busby

Coming through the youth ranks in 1957, the most torrid time in the club's history following the Busby Babes disaster, Johnny Giles failed to establish himself as a regular in the starting XI at the club. Sir Matt Busby sold him to Leeds, who were in the second division at that time, in 1963.

But, little did the great gaffer know that the Irishman would come back to haunt him in the years to come. The English midfielder established himself as the kingpin in a Leeds United side that would become United's rivals

"Giles could grab hold of a match, tuck it in his back pocket and carry it around with him. He didn't need to find space, it was as if space found him."

Brian Clough's statement above is a fine testimony to Giles' ability as a world-class midfielder. Sir Matt Busby, on the other hand, was left with nothing but regret regarding the legend's sale.